I heard something pop inside my mouth when flossing. What was it and what should I do?

Today I was flossing normally, and I slightly pulled on the wire between my two brackets. I heard a pop and immediately stopped to make sure I hadn't damaged anything. After close examination, it didn't appear that anything has broken, but the tooth now feels different, like more pressure is being exerted on it, and I'm wondering if it's because the bracket moved/broke, or if something is wrong inside my gum. If it is inside the gum, will the tooth fall out, etc.? Thanks for helping! :)

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